Participated in: United Nations Habitat II Conference, Istanbul, June 1996; Intergovernmental Negotiating Committee for the Elaboration of an International Convention to Combat Desertification in those Countries Experiencing Serious Drought and/or Desertification (INCD) Nos. 3 and 4; Conference of Parties 1, 2 and 3 (1996-1998); UNESCO Conference on Education for Sustainability, held in Thessalonika, Greece, from 8 to 12 December 1997; UNESCO international experts meeting on environmental education (Santiago de Compostela, Spain, 21-25 November 2000); meetings of the Mediterranean Commission on Sustainable Development (MCSD) (in the context of the UNEP Mediterranean Action Plan), 1996-1999; meeting of North African environment and development non-governmental organizations, UNDP, held in Tunis, from 28 to 30 April 1998.
- Asistencia a la Conferencia Internacional sobre Medio Ambiente y Sociedad: educación y sensibilización en materia de sostenibilidad, organizada por la UNESCO y celebrada en Tesalónica (Grecia) del 8 al 12 de diciembre de 1997;